Thank you!

Could be the camera causing the problem, but the truly blue ones (authentic 'Glauca') are bluer than that. There does seem to be a lot a material out there called 'Glauca' that are really seedlings of various degrees of blueness. So, ex-Glauca. I've even seen some in botanical gardens that are labeled 'Glauca' but are barely bluer than mine. Which was NOT a blue cultivar. (I wanted the greenest china fir I could find!)

(I am just assuming sc77 is familiar with the nursery selling the plant as that cultivar; the cultivar is more common on the market than the straight species)

Here's a picture of a blue one, apparently in Henrico Co., VA. Probably an original/authentic 'Glauca' grown from cuttings or grafting.

https://facultystaff.richmond.edu/~jhayden/landscape_plants/late_fall_woody_plants/cunninghamia_lanceolata_HENRICO_01s.JPG

Yes, I am familiar with the offerings at Broken Arrow. But also, they are in CT (z6b), so they offer Glauca due to it's hardiness over species. In my z6 I had some burn damage on the ends of the needles even with 'Glauca', so I'd imagine the species cannot survive in anything less then z7. I have only had mine a short time, but have read reports that these plants will be killed to the ground in a bad winter. The nice thing is, they regenerate new growth, even from a stump!

I'm not aware of any mature specimens in z6, even of 'Glauca'. I think most people grow it with the expectation it will get killed to the ground every 5-10 years, but z7 your probably fine.

Coloring of one shown in original post looks consistent with 'Glauca' to me.